package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     *
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info("DishDTO:   {} ", dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }


    /**
     * 菜品分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        //条件构造器
        LambdaQueryWrapper<Dish> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        lambdaQueryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        lambdaQueryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo, lambdaQueryWrapper);
        //分析:上述查询的分页对象中
        //2.创建新的分页对象
        Page<DishDto> dishDtoPage = new Page<>();
        //3.进行对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");
        //4 . 获取基本分页查询的集合数据
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> dtoList = new ArrayList<>();
        //  5. 遍历菜品集合
        records.forEach(dish -> {
            //5.1 将Dish拷贝到DishDto
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(dish, dishDto);
            //5.2  查询每一个菜品所属分类名称
            Category category = categoryService.getById(dish.getCategoryId());
            dishDto.setCategoryName(category.getName());
            //5.3 放入集合中
            dtoList.add(dishDto);
        });
        //6.将dtoList集合,添加到dtoPage分页对象中
        dishDtoPage.setRecords(dtoList);
        //7.返回分页对象数据
        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品
     *
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     *
     * @param dish
     * @return
     */
 /*   @GetMapping("/list")
    public R<List<Dish>> list(Dish dish) {
        //构造查询条件
        LambdaQueryWrapper<Dish> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());

        //添加条件,查询状态为1(起售状态)的菜品
        lambdaQueryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        lambdaQueryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(lambdaQueryWrapper);
        return R.success(list);
    }*/

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null ,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1（起售状态）的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            //SQL:select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }

    /**
     * 删除
     * @param ids
     * @return
     */
    @DeleteMapping()
    public R<String> deleteById(@RequestParam(name = "ids", value = "ids", required = true) List<Long> ids) {
        log.info("当前删除的菜品ids是 :  {}", ids);
/*        for (Long id : ids) {
            if (dishService.getById(id).getStatus() == 1) {
                throw new CustomException("商品" + dishService.getById(id).getName() + "起售中,无法删除");
            }
        }
        dishService.removeByIds(ids);*/

        dishService.removeWithFlavors(ids);
        return R.success("删除成功!");
    }

    /**
     * 起售停售
     *
     * @param ids
     * @return
     */
    @PostMapping("/status/{id}")
    public R<String> updateStatus(@PathVariable("id") Integer id, @RequestParam List<Long> ids) {
        log.info("获取到的的起售(1)停售(0)状态:   {}",id);
        dishService.updateByStatus(id,ids);
        return R.success(id==1 ? "菜品起售成功!":"菜品停售成功!");
    }
}
